Steel structure supporting device used in large foundation pit and using method

Abstract

The invention relates to the technical field of foundation pit supporting, in particular to a steel structure supporting device used in a large foundation pit and a using method.The steel structure supporting device comprises a cement base, multiple sets of connector assemblies are arranged on the upper surface of the cement base at equal intervals, and first protection assemblies are arranged on the portions, located on the two sides of the connector assemblies, of the upper surface of the cement base; the tail ends of the two first protection assemblies are movably connected and are reinforced through the connector assembly. The multiple first supporting plate bodies are arranged to be used in cooperation with the connector assemblies, modular splicing and guiding calibration are combined, the installation efficiency is improved, the right side connecting pieces and the left side connecting pieces installed on the two sides of the first supporting plate bodies are matched with the trapezoidal inclined faces of the guiding blocks, rapid clamping connection of the first protection plate and the second protection plate is achieved, and the installation efficiency is improved. Through the sliding calibration function of the guide rod and the guide groove, it is ensured that through holes formed in the right side connecting piece and the left side connecting piece are accurately aligned with limiting grooves, the manual adjustment time is shortened, and the installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit support, and in particular to a steel structure support device for use inside a large foundation pit and a method of use. Background Art

[0002] With the acceleration of urbanization and the deepening of underground space development, the scale and complexity of large-scale foundation pit projects have increased significantly, placing higher demands on support technology. Traditional foundation pit support technology generally suffers from problems such as structural redundancy, low space utilization, and insufficient deformation control accuracy.

[0003] Traditional support structures mostly use single diagonal braces or rigid support plates, which have the following defects: First, supporting the support plates with multiple single diagonal braces requires a large foundation pit space, affecting construction efficiency, and structural interference is easily generated when multiple diagonal braces are arranged crosswise; second, the splicing of support plates relies on on-site welding or bolt fixation, with low installation accuracy and difficulty in adapting to complex foundation pit shapes; third, support in curved areas mostly uses customized arc plates, which are costly and cannot be reused, and the modularity of the support structure is insufficient. Most traditional support equipment is disposable, resulting in waste of resources and increased economic costs. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a steel structure supporting device for the interior of a large foundation pit and a method of use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A steel structure support device for the interior of a large foundation pit, comprising a cement base, wherein a plurality of joint assemblies are equidistantly arranged on the upper surface of the cement base, and a first protective assembly is arranged on both sides of the upper surface of the cement base at the joint assembly, and the ends of the two first protective assemblies are movably connected and reinforced by the joint assembly; the first protective assembly comprises a first support plate body, which specifically comprises a first guard plate and a second guard plate, and both ends of the first guard plate and the second guard plate are respectively fixedly installed with a right connecting piece and a left connecting piece, wherein the left connecting piece fixedly installed on the side wall of the first guard plate and the right connecting piece fixedly installed on the side wall of the second guard plate are clamped with each other, and a plurality of through holes are opened through the right connecting piece and the left connecting piece; the joint The component specifically includes a column, which is located outside the connection between the right connecting member and the left connecting member. A limiting groove is provided on the column corresponding to the through holes on the right connecting member and the left connecting member. A plurality of second bolts are provided inside the limiting groove. The ends of the second bolts pass through the through holes provided on the right connecting member and the left connecting member and are threadedly connected to the corresponding positions on the column; a first reinforcing component is provided on the outer wall of the first protective component, and the first reinforcing component specifically includes two detachable beams provided on the outer wall of the first protective component; a supporting component for supporting the first reinforcing component is provided on the outer side of the first reinforcing component; a second protective component is also provided on the upper surface of the cement base, and connecting plates are movably connected on both sides of the second protective component.

[0007] Preferably, the support assembly specifically includes a support seat, the outer wall of the support seat is movably connected to four diagonal support rods, the ends of the diagonal support rods away from the support seat are movably connected to a docking seat, a first bolt is movably installed on the docking seat, the docking seat is connected to the corresponding position on the beam through the first bolt, and an embedded part is provided inside the support seat, and the lower end of the embedded part is embedded in the soil at the bottom of the foundation pit.

[0008] Preferably, the second protective assembly specifically includes two second support plate bodies, and the first page plate and the second page plate are fixedly installed on both sides of the two second support plate bodies, respectively, wherein the first page plate and the second page plate on the side where the two second support plate bodies are close to each other are hinged together, and a second reinforcement assembly is arranged between the two second support plate bodies, and the second reinforcement assembly is used to keep the structure of the two second support plate bodies stable.

[0009] Preferably, two threaded rods are fixedly installed on the outer wall of the first support plate body, and a circular hole is opened on the crossbeam for use with the two threaded rods. The threaded rods pass through the inside of the circular holes, and the ends of the threaded rods are threadedly connected with fixing nuts and the crossbeam is fastened by the fixing nuts.

[0010] Preferably, two symmetrically arranged guide blocks are slidably mounted on the outer walls of the right connecting member and the left connecting member, and the cross-section of the guide blocks is a trapezoidal structure with inclined surfaces at both ends.

[0011] Preferably, extension blocks are fixedly installed at both ends of the outer wall of the first support plate body, and a guide groove is provided on the extension block. An extension rod is fixedly installed on the upper half of the outer wall of the column, and the end of the extension rod is threadedly connected to a guide rod used in conjunction with the guide groove. The guide rod is threadedly connected to the extension rod, and a groove is provided on the inner wall of the end of the guide groove. A rotating shaft is rotatably installed inside the groove, and a baffle is fixedly installed on the outer wall of the rotating shaft. A torsion spring is fixedly connected between the end of the rotating shaft and the inner wall of the bottom surface of the groove.

[0012] Preferably, the second reinforcement assembly specifically includes a fixing rod, an adjusting rod is slidably installed at the end of the fixing rod, a first connecting seat is fixedly installed on the second support plate body at positions corresponding to the ends of the fixing rod and the adjusting rod, and the ends of the fixing rod and the adjusting rod are detachably connected to the first connecting seat, the outer walls of the fixing rod and the adjusting rod are rotatably connected to the reinforcing rod, both ends of the reinforcing rod are rotatably connected to the second connecting seat, the second connecting seat is fixedly connected to the adjusting rod, the fixing rod and the outer wall of the second support plate body, respectively, and the two ends of the reinforcing rod are connected to the adjusting rod, the fixing rod and the corresponding positions on the second support plate body through the second connecting seat.

[0013] Preferably, the two cross beams are respectively arranged at the upper half and the lower half of the first protective component, and two symmetrically arranged longitudinal beams are movably connected between the two cross beams.

[0014] Preferably, ball heads are fixedly installed at both ends of the diagonal support rod, and ball head seats used in conjunction with the ball heads are fixedly installed on the outer walls of the support seat and the docking seat connected to the two ends of the diagonal support rod, and the ball heads and the ball head seats are movably connected.

[0015] A method for using a steel structure support device inside a large foundation pit, the method specifically comprising the following steps:

[0016] Step 1: Pre-cast a cement base with concrete around the bottom of a large foundation pit, fix multiple columns on the upper surface of the cement base, and set multiple sets of first protection components and second protection components on the upper surface of the cement base to support the inner wall of the foundation pit;

[0017] Step 2: For the area where the inner wall of the foundation pit is linear, support is performed by splicing multiple first support plate bodies, and the first support plate bodies on the left and right sides of the column are defined as the second guard plate and the first guard plate respectively. The user can control the horizontal movement of the second guard plate, and preferentially move the end of the second guard plate fixedly installed with the right connecting piece to the inside of the column. It is worth mentioning that when the second guard plate moves toward the inside of the column, the lower end of the guide rod provided at the upper end of the outer wall of the column is not lower than the bottom surface of the extension rod. When the end of the second guard plate passes through the inside of the column, the user moves the second guard plate so that the outer wall of the second guard plate is close to the inner wall of the column, making way for the space inside the column, thereby facilitating the user to move the first guard plate in the horizontal direction so that the end of the first guard plate installed with the left connecting piece moves into the inside of the column;

[0018] Step 3: During the process of the second guard plate and the first guard plate's ends moving toward the inside of the column, when the extension blocks fixedly installed on the outer walls of the two move to the bottom of the guide rod, the user can rotate the guide rod so that the lower end of the guide rod extends downward, and then the second guard plate and the first guard plate continue to move toward the inside of the column. At this time, the lower end of the guide rod squeezes the baffle so that the baffle rotates to the inside of the groove, and the lower end of the guide rod continues to slide inside the guide groove until it reaches the other end of the guide groove. When the lower end of the guide rod is at the other end of the guide groove, the outer walls of the first guard plate and the second guard plate are both in contact with the inner wall of the column;

[0019] Step 4: The user then simultaneously pulls the first guard plate and the second guard plate toward both sides. Under the cooperation of the guide rod and the guide groove and the guiding action of the guide block, the right connecting piece provided at the end of the second guard plate is engaged with the left connecting piece provided at the end of the first guard plate, and the through holes provided on the right connecting piece and the left connecting piece are aligned with the limiting groove provided through the column. The user can connect the first guard plate and the second guard plate by passing a plurality of second bolts through the through holes provided on the right connecting piece and the left connecting piece, and thus the first guard plate and the second guard plate can be respectively installed on both sides of the column.

[0020] Step 5: After the installation of the multiple first support plate bodies is completed, the first reinforcement assembly can be installed on the outside of the multiple first support plate bodies, wherein the crossbeam can reinforce the upper and lower halves of the first support plate bodies, and then four diagonal braces can be used to support four points on the crossbeam. The four diagonal braces are combined to form a quadrangular pyramid structure, and the ends of the four diagonal braces are connected to the support seat, and the support seat is fixed to the bottom of the foundation pit through embedded parts, thereby strengthening the support effect of the multiple first support plate bodies by diagonal bracing;

[0021] The second support plate body is connected to the second support plate body by the plurality of second support plate bodies, wherein the two second support plate bodies are assembled and spliced by the first page plate and the second page plate, and fit the curved inner wall of the foundation pit. The fixing rod and the adjusting rod arranged between the two second support plate bodies can be combined with the fixing rod and the adjusting rod of different lengths according to the actual size of the second support plate body. The outer walls of the fixing rod and the adjusting rod can be connected with reinforcing rods of different lengths to support the inner wall of the second support plate body, and the fixing rod and the adjusting rod are provided with mounting holes matching the first bolts on the docking seat. The supporting assembly can also cooperate with the second reinforcing assembly for support, further ensuring the supporting effect of the second protective assembly on the curved position of the inner wall of the large foundation pit. Both ends of the second protective assembly are rotatably connected to the connecting plate through the first page plate and the second page plate, and the ends of the connecting plate are matched with the right connecting piece and the right connecting piece arranged at both ends of the first support plate body;

[0022] Step 7: By combining multiple sets of first protection components and multiple sets of second protection components, the inner walls of large foundation pits of various shapes can be supported.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention realizes the combination of modular splicing and guide calibration by setting multiple first support plate bodies and cooperating with joint assemblies, thereby improving installation efficiency. The right-side connecting piece and the left-side connecting piece installed on both sides of the first support plate body cooperate with the trapezoidal inclined surface of the guide block to realize rapid connection between the first guard plate and the second guard plate. The sliding calibration function of the guide rod and the guide groove ensures that the through holes opened on the right-side connecting piece and the left-side connecting piece are accurately aligned with the limit grooves, thereby reducing manual adjustment time and improving installation efficiency.

[0025] The present invention sets a support assembly, and four diagonal support rods are connected with ball heads to form a four-sided pyramid support. Compared with the traditional diagonal support layout, it reduces the horizontal space occupation and saves the operating space inside the foundation pit. At the same time, the support seat is pre-buried and fixed, which can enhance the overall anti-overturning ability and improve the support effect on the inner wall of the large foundation pit.

[0026] The present invention arranges a first protective component and a second protective component for coordinated splicing, so that the support structure can fit with a straight inner wall of a foundation pit and a curved inner wall of a foundation pit, and then supports inner walls of foundation pits of different shapes through the coordination of the first protective component and the second protective component. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a structural diagram of an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the support assembly structure in an embodiment of the present invention;

[0030] Figure 3 This is a schematic structural diagram of the first reinforcement assembly in an embodiment of the present invention;

[0031] Figure 4 Schematic diagram of the connection structure between the first guard plate and the second guard plate in an embodiment of the present invention;

[0032] Figure 5 This is a schematic structural diagram of a joint assembly in an embodiment of the present invention;

[0033] Figure 6 Schematic diagram of the guide groove structure in an embodiment of the present invention;

[0034] Figure 7 This is a schematic structural diagram of the second reinforcement assembly in an embodiment of the present invention;

[0035] Figure 8 This is a schematic structural diagram of the second protection component in an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the connecting plate structure in an embodiment of the present invention;

[0037] Figure 10 In the embodiment of the present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0038] Figure 11 In the embodiment of the present invention Figure 4 A schematic diagram of the partially enlarged structure at point B in the middle;

[0039] Figure 12 In the embodiment of the present invention Figure 11 A schematic diagram of the partially enlarged structure at point C in the middle;

[0040] Figure 13 Schematic diagram of the splicing structure of the first protection component and the second protection component in an embodiment of the present invention;

[0041] Figure 14 Schematic diagram of the structural splicing of multiple groups of second protective components in an embodiment of the present invention.

[0042] Figure: 1, cement base; 2, joint assembly; 201, column; 202, limit groove; 203, extension rod; 204, guide rod; 3, first protective assembly; 301, first support plate body; 3011, first guard plate; 3012, second guard plate; 302, right connecting piece; 303, left connecting piece; 304, extension block; 305, guide groove; 306, baffle; 307, groove; 308, rotating shaft; 309, guide block; 4, first reinforcement assembly; 401, beam; 402, thread Rod; 403, fixing nut; 404, longitudinal beam; 5, support assembly; 501, diagonal support rod; 502, ball head; 503, ball head seat; 504, docking seat; 505, first bolt; 506, support seat; 507, embedded part; 6, second protection assembly; 601, second support plate body; 602, first page plate; 603, second page plate; 7, first connecting seat; 8, second reinforcement assembly; 801, fixing rod; 802, adjusting rod; 803, reinforcement rod; 804, second connecting seat; 9, connecting plate. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Reference Figure 1-14A steel structure support device for the interior of a large foundation pit comprises a cement base 1, a plurality of joint assemblies 2 are arranged at equal intervals on the upper surface of the cement base 1, the cement base 1 is pre-cast on the bottom surface of the foundation pit according to the shape of the large foundation pit by the user, and the plurality of joint assemblies 2 are distributed on the upper surface of the cement base 1 according to the distance pre-measured by the user, and a first protective assembly 3 is provided on both sides of the upper surface of the cement base 1 on the joint assembly 2, the ends of the two first protective assemblies 3 are movably connected and reinforced by the joint assembly 2, the first protective assembly 3 comprises a first support plate body 301, the first support plate The body 301 specifically includes a first guard plate 3011 and a second guard plate 3012, and both ends of the first guard plate 3011 and the second guard plate 3012 are respectively fixedly installed with a right connecting piece 302 and a left connecting piece 303, wherein the left connecting piece 303 fixedly installed on the side wall of the first guard plate 3011 and the right connecting piece 302 fixedly installed on the side wall of the second guard plate 3012 are mutually clamped, and a plurality of through holes are opened on the right connecting piece 302 and the left connecting piece 303; the joint assembly 2 specifically includes a column 201, and the column 201 is located at the connection between the right connecting piece 302 and the left connecting piece 303 The outer part is provided with a limiting groove 202 corresponding to the through holes on the right connecting piece 302 and the left connecting piece 303, and a plurality of second bolts are provided inside the limiting groove 202. The ends of the second bolts pass through the through holes provided on the right connecting piece 302 and the left connecting piece 303 and are threadedly connected with the corresponding positions on the column 201; the outer wall of the first protective component 3 is provided with a first reinforcing component 4, and the first reinforcing component 4 specifically includes two detachable beams 401 provided on the outer wall of the first protective component 3; the outer side of the first reinforcing component 4 is provided with a support for the first reinforcing component 4 The support assembly 5 specifically includes a support seat 506, and the outer wall of the support seat 506 is movably connected to four oblique support rods 501, and one end of the oblique support rod 501 away from the support seat 506 is movably connected to a docking seat 504, and a first bolt 505 is movably installed on the docking seat 504. The docking seat 504 is connected to the corresponding position on the beam 401 through the first bolt 505. The four oblique support rods 501 can support four points on the beam 401. The four oblique support rods 501 are combined to form a quadrangular pyramid structure, which saves more operating space inside the foundation pit than the traditional oblique support support method.The upper surface of the joint assembly 2 is further provided with a second protective assembly 6, which specifically includes two second supporting plate bodies 601, and the first page plate 602 and the second page plate 603 are fixedly installed on both sides of the two second supporting plate bodies 601, wherein the first page plate 602 and the second page plate 603 on the side where the two second supporting plate bodies 601 are close to each other are hinged together, and the first page plate 602 and the second page 603 can form a complete hinge after being combined. A second reinforcing assembly 8 is provided between the two second supporting plate bodies 601, and the second reinforcing assembly 8 ensures that the structure of the two second supporting plate bodies 601 remains stable. Both sides of the second protective assembly 6 are movably connected with a connecting plate 9 through the first page plate 602 and the second page 603. The second protective assembly 6 can be connected to the first protective assembly 3 through the connecting plate 9, and the connecting plate 9 is connected with the first page plate 602 and the second page plate 603 that are hinged together according to the specific situation of the first page plate 602 or the second page plate 603 being fixedly installed on the outer wall of the end of the second supporting plate body 601;

[0045] When in use, a cement base 1 is poured with concrete on the periphery of the bottom surface of a large foundation pit in advance. The upper surface of the cement base 1 is provided with embedded parts 507 during pouring. Then, a plurality of columns 201 are fixedly installed on the upper surface of the cement base 1. The lower ends of the columns 201 are fixed by nuts and the threads of the embedded parts 507. The upper surface of the cement base 1 is provided with a plurality of groups of first protective components 3 and second protective components 6 to support the inner wall of the foundation pit. For the linear area of the inner wall of the foundation pit, multiple first supporting plate bodies 301 are spliced together for support. The first supporting plate bodies 301 on the left and right sides of each column 201 are fixed. 1 are defined as the second guard plate 3012 and the first guard plate 3011, respectively. When the first set of the second guard plate 3012 and the first guard plate 3011 are installed, the user can control the horizontal movement of the second guard plate 3012, and preferentially move the end of the second guard plate 3012 fixedly mounted with the right connecting piece 302 to the inside of the column 201. When the end of the second guard plate 3012 passes through the inside of the column 201, the user moves the second guard plate 3012 so that the outer wall of the second guard plate 3012 is in close contact with the inner wall of the column 201, making room for the space inside the column 201, thereby facilitating the user to move the first guard plate in the horizontal direction. 3011, so that the end of the first guard plate 3011 equipped with the left connecting piece 303 is moved into the interior of the column 201, and then the user simultaneously pulls the first guard plate 3011 and the second guard plate 3012 to both sides, so that the right connecting piece 302 set at the end of the second guard plate 3012 is engaged with the left connecting piece 303 set at the end of the first guard plate 3011, and the through holes opened on the right connecting piece 302 and the left connecting piece 303 are aligned with the limiting groove 202 opened through the column 201, and the user passes a plurality of second bolts through the through holes opened on the right connecting piece 302 and the left connecting piece 303. The hole can be used to connect the first guard plate 3011 and the second guard plate 3012, that is, the first guard plate 3011 and the second guard plate 3012 can be installed on both sides of the column 201 respectively, and then the user can successively clamp and install the ends of multiple first support plate bodies 301, and the connections of multiple first support plate bodies 301 are all provided with columns 201 for reinforcement. After the combination and installation of multiple first protection components 3 are completed, the structure of the multiple first protection components 3 is strengthened by the first reinforcement component 4, and then supported by the support component 5, wherein the second protection component 6 can fit with the curved inner wall inside the foundation pit.

[0046] As a technical optimization solution of the present invention, two threaded rods 402 are fixedly installed on the outer wall of the first support plate body 301, and a circular hole is opened on the crossbeam 401 for use with the two threaded rods 402. The threaded rod 402 passes through the inside of the circular hole, and the end of the threaded rod 402 is threadedly connected with a fixing nut 403 and the crossbeam 401 is fastened by the fixing nut 403.

[0047] As a technical optimization solution of the present invention, the outer walls of the right connecting piece 302 and the left connecting piece 303 are slidably installed with two symmetrical guide blocks 309, the cross section of the guide blocks 309 is a trapezoidal structure, and both ends are inclined. When the connection between the right connecting piece 302 and the left connecting piece 303 is inside the column 201, the outer walls of the right connecting piece 302 and the left connecting piece 303 can be squeezed tightly against the inner wall of the column 201 through the guide blocks 309 located outside the right connecting piece 302 and the left connecting piece 303; the right connecting piece 302 and the left connecting piece 303 are integrated with the first support plate body 301, and the guide blocks 309 can slide along the outer walls of the right connecting piece 302, the left connecting piece 303 and the first support plate body 301. One end of the guard plate 3012 with the right connecting piece 302 installed is fixed, and the other end of the second guard plate 3012 with the left connecting piece 303 installed is inside the adjacent column 201. At this time, the user can slide the end of the second guard plate 3012 to be connected with the other first guard plate 3011 to make way, and then the user can move the end of the other first guard plate 3011 with the right connecting piece 302 installed into the interior of the column 201 for docking. When the end of the first guard plate 3011 with the right connecting piece 302 installed passes through the interior of the column 201 and is pulled outward to complete the docking with the left connecting piece 303 on the second guard plate 3012, the user can slide the guide block 309 again to tighten the connection between the first guard plate 3011 and the second guard plate 3012.

[0048] As a technical optimization solution of the present invention, the outer wall of the first support plate body 301 is also fixedly installed with extension blocks 304 at both ends, and a guide groove 305 is opened on the extension block 304. The upper half of the outer wall of the column 201 is fixedly installed with an extension rod 203, and the end of the extension rod 203 is threadedly connected with a guide rod 204 used in conjunction with the guide groove 305. The guide rod 204 is threadedly connected to the extension rod 203, and the position of the guide rod 204 can be adjusted by rotating up and down. When the first guard plate 3011 and the second guard plate 3012 are moved toward the column 201, the user can adjust the guide rod 204 upward by rotating it. When the left connecting piece 303 set at the end of the first guard plate 3011 moves into the interior of the column 201, the user rotates the guide rod 204 to make it slide downward. Then, when the first guard plate 3011 continues to move toward the interior of the column 201, the end of the guide rod 204 slides along the inside of the guide groove 305. The guide groove 305 cooperates with the guide rod 204 to play a guiding role when the first guard plate 3011 and the second guard plate 3012 are installed.

[0049] As a technical optimization solution of the present invention, a groove 307 is provided on the inner wall of the end of the guide groove 305, and a rotating shaft 308 is rotatably installed inside the groove 307. A baffle 306 is fixedly installed on the outer wall of the rotating shaft 308. A torsion spring is fixedly connected between the end of the rotating shaft 308 and the inner wall of the bottom surface of the groove 307. When the baffle 306 is squeezed by the guide rod 204, the rotating shaft 308 can be rotated under the action of the torsion spring so that the baffle 306 is inside the groove 307 after rotation. When the guide rod 204 slides into the interior of the guide groove 305, the groove 307 rotates to block the end of the guide groove 305. When the first guard plate 3011 and the second guard plate 3012 are When the guide rod 204 slides inside the guide groove 305 until it contacts the baffle 306, it means that the through holes on the right and left connecting members 302, 303 correspond to the position of the limiting groove 202 on the column 201, which can calibrate the limiting groove 202 and the through holes on the right and left connecting members 302, 303.

[0050] As a technical optimization solution of the present invention, the second reinforcement component 8 specifically includes a fixing rod 801, an adjusting rod 802 is slidably installed at the end of the fixing rod 801, and a first connecting seat 7 is fixedly installed on the second support plate body 601 at positions corresponding to the ends of the fixing rod 801 and the adjusting rod 802, and the ends of the fixing rod 801 and the adjusting rod 802 are detachably connected to the first connecting seat 7, and the outer walls of the fixing rod 801 and the adjusting rod 802 are rotatably connected to the reinforcing rod 803, and both ends of the reinforcing rod 803 are rotatably connected to the second connecting seat 804, and the second connecting seat 804 is fixedly connected to the adjusting rod 802, the fixing rod 801 and the outer wall of the second support plate body 601, and the two ends of the reinforcing rod 803 are connected to the corresponding positions on the adjusting rod 802, the fixing rod 801 and the second support plate body 601 through the second connecting seat 804, respectively. The rod 801 and the adjusting rod 802 are a combined structure, wherein the fixing rod 801 and the adjusting rod 802 can be combined with fixing rods 801 and adjusting rods 802 of different lengths according to the actual size of the second support plate body 601. Reinforcing rods 803 of different lengths can be connected to the outer walls of the fixing rod 801 and the adjusting rod 802 to support the inner wall of the second support plate body 601, so that the structure composed of two second support plate bodies 601 is suitable for supporting the inner wall of the curved part of a large foundation pit, and the connection between the fixing rod 801 and the adjusting rod 802 is fixed by a third bolt, and both the fixing rod 801 and the adjusting rod 802 are provided with mounting holes that match the first bolt 505 on the docking seat 504, so that the support assembly 5 can also support the second reinforcing assembly 8, further ensuring the support effect of the second protection assembly 6 on the curved position of the inner wall of the large foundation pit.

[0051] As a technical optimization solution of the present invention, an embedded part 507 is provided inside the support seat 506, and the lower end of the embedded part 507 is embedded in the soil at the bottom of the foundation pit; the lower end of the embedded part 507 is embedded in the inner wall of the soil, and the weight of the support seat 506 poured with concrete itself can prevent the support seat 506 from being displaced, thereby ensuring the supporting effect of multiple first protective components 3.

[0052] As a technical optimization solution of the present invention, two cross beams 401 are respectively arranged in the upper and lower parts of the first protective component 3, and two symmetrically arranged longitudinal beams 404 are movably connected between the two cross beams 401; the setting of the longitudinal beams 404 can further enhance the structural strength of the two cross beams 401, and after being combined with the two cross beams 401, the structural reinforcement effect of multiple first protective components 3 is better.

[0053] As a technical optimization solution of the present invention, ball heads 502 are fixedly installed at both ends of the diagonal support rod 501, and ball head seats 503 used in conjunction with the ball heads 502 are fixedly installed on the outer walls of the support seats 506 and the docking seats 504 connected to the two ends of the diagonal support rod 501, and the ball head seats 503 are movably connected with each other; the two ends of the diagonal support rod 501 are connected by the ball heads 502 and the ball head seats 503, which can meet the needs of multi-angle adjustment of the diagonal support rod 501, making multiple diagonal support rods 501 more flexible when used.

[0054] A method for using a steel structure support device inside a large foundation pit, specifically comprising the following steps:

[0055] Step 1: Pre-cast a cement base 1 with concrete around the bottom surface of a large foundation pit. Pre-embedded rods are provided on the upper surface of the cement base 1 during casting. Multiple columns 201 are then fixedly installed on the upper surface of the cement base 1. The lower ends of the columns 201 are fixed by nuts engaging with the threads of the pre-embedded rods. Multiple sets of first protective components 3 and second protective components 6 are provided on the upper surface of the cement base 1 to support the inner wall of the foundation pit.

[0056] Step 2: For the straight area of the inner wall of the foundation pit, multiple pieces of the first supporting plate body 301 are spliced together for support. The first supporting plate body 301 on the left and right sides of the column 201 are defined as the second guard plate 3012 and the first guard plate 3011 respectively. The user can control the horizontal movement of the second guard plate 3012, and preferably move the end of the second guard plate 3012 fixed with the right connecting piece 302 to the inside of the column 201. It is worth mentioning that when the second guard plate 3012 moves toward the inside of the column 201 The lower end of the guide rod 204 provided at the upper end of the outer wall of the column 201 is not lower than the bottom surface of the extension rod 203. When the end of the second guard plate 3012 passes through the interior of the column 201, the user moves the second guard plate 3012 so that the outer wall of the second guard plate 3012 is in close contact with the inner wall of the column 201, making room for the space inside the column 201, thereby facilitating the user to move the first guard plate 3011 in the horizontal direction so that the end of the first guard plate 3011 equipped with the left connecting piece 303 moves into the interior of the column 201.

[0057] Step 3: During the process of the ends of the second guard plate 3012 and the first guard plate 3011 moving toward the inside of the column 201, when the extension block 304 fixedly installed on the outer walls of the two moves to the bottom of the guide rod 204, the user can rotate the guide rod 204 so that the lower end of the guide rod 204 extends downward, and then the second guard plate 3012 and the first guard plate 3011 continue to move toward the inside of the column 201. At this time, the lower end of the guide rod 204 squeezes the baffle 306 so that the baffle 306 rotates to the inside of the groove 307, and the lower end of the guide rod 204 continues to slide inside the guide groove 305 until it reaches the other end of the guide groove 305. When the lower end of the guide rod 204 is at the other end of the guide groove 305, the outer walls of the first guard plate 3011 and the second guard plate 3012 are both in contact with the inner wall of the column 201;

[0058] Step 4: The user then simultaneously pulls the first guard plate 3011 and the second guard plate 3012 to both sides respectively. Under the cooperation of the guide rod 204 and the guide groove 305 and the guiding action of the guide block 309, the right connecting piece 302 provided at the end of the second guard plate 3012 is engaged with the left connecting piece 303 provided at the end of the first guard plate 3011, and the through holes provided on the right connecting piece 302 and the left connecting piece 303 are aligned with the limiting groove 202 provided through the column 201. The user can connect the first guard plate 3011 and the second guard plate 3012 by passing a plurality of second bolts through the through holes provided on the right connecting piece 302 and the left connecting piece 303, and thus the first guard plate 3011 and the second guard plate 3012 can be respectively installed on both sides of the column 201;

[0059] Step 5: After the installation of the plurality of first support plate bodies 301 is completed, the first reinforcement assembly 4 can be installed on the outside of the plurality of first support plate bodies 301, wherein the crossbeam 401 can reinforce the upper and lower halves of the first support plate body 301, and then four diagonal bracing rods 501 can be used to support four positions on the crossbeam 401. The four diagonal bracing rods 501 are combined to form a quadrangular pyramid structure, and the ends of the four diagonal bracing rods 501 are all connected to the support seat 506, and the support seat 506 is fixed to the bottom of the foundation pit through the embedded parts 507, thereby strengthening the support effect of the plurality of first support plate bodies 301 by diagonal bracing;

[0060] Step 6: For the area where the inner wall of the foundation pit is curved, it is supported by connecting multiple second supporting plate bodies 601. Two second supporting plate bodies 601 are assembled and spliced through the first page plate 602 and the second page plate 603 to fit the curved inner wall of the foundation pit. The fixing rod 801 and the adjusting rod 802 set between the two second supporting plate bodies 601 can be combined with different lengths of fixing rods 801 and adjusting rods 802 according to the actual size of the second supporting plate body 601. Reinforcing rods 803 of different lengths can be connected to the outer walls of the fixing rod 801 and the adjusting rod 802 to strengthen the second supporting plate body. The inner wall of the second support plate body 601 is supported, and the fixing rod 801 and the adjusting rod 802 are provided with mounting holes that match the first bolt 505 on the docking seat 504. The support assembly 5 can also cooperate with the second reinforcement assembly 8 for support, further ensuring the support effect of the second protection assembly 6 on the curved position of the inner wall of the large foundation pit. Both ends of the second protection assembly 6 are rotatably connected to the connecting plate 9 through the first page plate 602 and the second page plate 603, and the ends of the connecting plate 9 are matched with the right connecting piece 302 and the right connecting piece 302 provided at both ends of the first support plate body 301;

[0061] Step 7: By combining multiple groups of first protection components 3 and multiple groups of second protection components 6, the inner wall of a large foundation pit of various shapes can be supported.

[0062] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

[0063] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A steel structure support device for use in a large foundation pit, comprising a cement base (1), characterized in that: A plurality of joint assemblies (2) are equidistantly arranged on the upper surface of the cement base (1); first protective assemblies (3) are arranged on both sides of the joint assemblies (2) on the upper surface of the cement base (1); the ends of the two first protective assemblies (3) are movably connected and reinforced by the joint assemblies (2); The first protection component (3) comprises a first support plate body (301), the first support plate body (301) specifically comprising a first guard plate (3011) and a second guard plate (3012), both ends of the first guard plate (3011) and the second guard plate (3012) are respectively fixedly mounted with a right connecting piece (302) and a left connecting piece (303), wherein the left connecting piece (303) fixedly mounted on the side wall of the first guard plate (3011) and the right connecting piece (302) fixedly mounted on the side wall of the second guard plate (3012) are mutually engaged, and a plurality of through holes are formed through the right connecting piece (302) and the left connecting piece (303); The joint assembly (2) specifically includes a column (201), the column (201) is arranged outside the connection between the right connecting piece (302) and the left connecting piece (303), a limiting groove (202) is provided on the column (201) corresponding to the through holes on the right connecting piece (302) and the left connecting piece (303), a plurality of second bolts are provided inside the limiting groove (202), and the ends of the second bolts pass through the through holes provided on the right connecting piece (302) and the left connecting piece (303) and are threadedly connected to the corresponding positions on the column (201); The outer wall of the first protection component (3) is provided with a first reinforcement component (4), and the first reinforcement component (4) specifically comprises two detachable beams (401) provided on the outer wall of the first protection component (3); a support component (5) for supporting the first reinforcement component (4) is provided on the outer side of the first reinforcement component (4); A second protective component (6) is also provided on the upper surface of the cement base (1), and both sides of the second protective component (6) are movably connected with connecting plates (9).

2. A steel structure support device for use inside a large foundation pit according to claim 1, characterized in that: The support assembly (5) specifically includes a support seat (506), the outer wall of the support seat (506) is movably connected to four diagonal support rods (501), one end of the diagonal support rods (501) away from the support seat (506) is movably connected to a docking seat (504), a first bolt (505) is movably installed on the docking seat (504), and the docking seat (504) is connected to a corresponding position on the crossbeam (401) through the first bolt (505), and an embedded part (507) is provided inside the support seat (506), and the lower end of the embedded part (507) is embedded in the soil at the bottom of the foundation pit.

3. A steel structure support device for use inside a large foundation pit according to claim 2, characterized in that: The second protection assembly (6) specifically includes two second support plate bodies (601), and a first page plate (602) and a second page plate (603) are fixedly installed on both sides of the two second support plate bodies (601), wherein the first page plate (602) and the second page plate (603) on the side where the two second support plate bodies (601) are close to each other are hinged together, and a second reinforcement assembly (8) is provided between the two second support plate bodies (601), and the second reinforcement assembly (8) ensures that the structure of the two second support plate bodies (601) remains stable.

4. A steel structure support device for use inside a large foundation pit according to claim 3, characterized in that: Two threaded rods (402) are fixedly mounted on the outer wall of the first supporting plate body (301), and a circular hole for use with the two threaded rods (402) is opened through the crossbeam (401), and the threaded rods (402) pass through the inside of the circular hole, and the ends of the threaded rods (402) are threadedly connected to fixing nuts (403) and the crossbeam (401) is fastened by the fixing nuts (403).

5. A steel structure supporting device for use inside a large foundation pit according to claim 4, characterized in that: Two symmetrically arranged guide blocks (309) are slidably mounted on the outer walls of the right connecting piece (302) and the left connecting piece (303). The cross section of the guide blocks (309) is a trapezoidal structure, with both ends being inclined.

6. A steel structure support device for use inside a large foundation pit according to claim 5, characterized in that: Extension blocks (304) are fixedly mounted on both ends of the outer wall of the first support plate body (301), and a guide groove (305) is provided on the extension block (304). An extension rod (203) is fixedly mounted on the upper half of the outer wall of the column (201). The end of the extension rod (203) is threadedly connected to a guide rod (204) used in conjunction with the guide groove (305). The guide rod (204) is threadedly connected to the extension rod (203). A groove (307) is provided on the inner wall of the end of the guide groove (305). A rotating shaft (308) is rotatably mounted inside the groove (307). A baffle (306) is fixedly mounted on the outer wall of the rotating shaft (308). A torsion spring is fixedly connected between the end of the rotating shaft (308) and the inner wall of the bottom surface of the groove (307).

7. A steel structure supporting device for use in a large foundation pit according to claim 6, characterized in that: The second reinforcement assembly (8) specifically includes a fixing rod (801), an adjusting rod (802) is slidably mounted on the end of the fixing rod (801), a first connecting seat (7) is fixedly mounted on the second support plate body (601) at positions corresponding to the ends of the fixing rod (801) and the adjusting rod (802), and the ends of the fixing rod (801) and the adjusting rod (802) are detachably connected to the first connecting seat (7), and the outer walls of the fixing rod (801) and the adjusting rod (802) are A reinforcing rod (803) is rotatably connected, and both ends of the reinforcing rod (803) are rotatably connected to a second connecting seat (804), and the second connecting seat (804) is fixedly connected to the adjusting rod (802), the fixing rod (801) and the outer wall of the second supporting plate body (601), and the two ends of the reinforcing rod (803) are respectively connected to the corresponding positions on the adjusting rod (802), the fixing rod (801) and the second supporting plate body (601) through the second connecting seat (804).

8. The steel structure supporting device for use in a large foundation pit according to claim 7, characterized in that: The two cross beams (401) are respectively located at the upper half and the lower half of the first protection component (3), and two symmetrically arranged longitudinal beams (404) are movably connected between the two cross beams (401).

9. A steel structure supporting device for use inside a large foundation pit according to claim 8, characterized in that: Both ends of the diagonal support rod (501) are fixedly mounted with ball heads (502); the outer walls of the support seat (506) and the docking seat (504) connected to the two ends of the diagonal support rod (501) are fixedly mounted with ball head seats (503) for use with the ball heads (502); and the ball heads (502) and the ball head seats (503) are movably connected.

10. The method for using the steel structure support device for a large foundation pit according to claim 9, characterized in that: The method of use specifically comprises the following steps: Step 1: Preliminarily, a cement base (1) is cast with concrete on the periphery of the bottom surface of a large foundation pit, a plurality of columns (201) are fixedly installed on the upper surface of the cement base (1), and a plurality of groups of first protection components (3) and second protection components (6) are provided on the upper surface of the cement base (1) to support the inner wall of the foundation pit; Step 2: For the area where the inner wall of the foundation pit is linear, support is performed by splicing multiple first support plate bodies (301), and the first support plate bodies (301) on the left and right sides of the column (201) are defined as the second guard plate (3012) and the first guard plate (3011), respectively. Then, the user can control the horizontal movement of the second guard plate (3012), and preferentially move the end of the second guard plate (3012) fixedly mounted with the right connecting piece (302) to the inside of the column (201). It is worth mentioning that when the second guard plate (3012) moves toward the inside of the column (201), the position The lower end of the guide rod (204) provided at the upper end of the outer wall of the column (201) is not lower than the bottom surface of the extension rod (203). When the end of the second guard plate (3012) passes through the interior of the column (201), the user moves the second guard plate (3012) so that the outer wall of the second guard plate (3012) is in close contact with the inner wall of the column (201), thereby making room for the space inside the column (201), thereby facilitating the user to move the first guard plate (3011) in the horizontal direction so that the end of the first guard plate (3011) equipped with the left connecting piece (303) moves into the interior of the column (201). Step 3: During the process of the second guard plate (3012) and the first guard plate (3011) moving toward the interior of the column (201), when the extension block (304) fixedly installed on the outer wall of the two moves to the bottom of the guide rod (204), the user can rotate the guide rod (204) so that the lower end of the guide rod (204) extends downward, and then the second guard plate (3012) and the first guard plate (3011) continue to move toward the interior of the column (201). At this time The lower end of the guide rod (204) presses the baffle (306) so that the baffle (306) rotates to the inside of the groove (307), and the lower end of the guide rod (204) continues to slide inside the guide groove (305) until it reaches the other end of the guide groove (305). When the lower end of the guide rod (204) is at the other end of the guide groove (305), the outer walls of the first guard plate (3011) and the second guard plate (3012) are both in contact with the inner wall of the column (201); Step 4: The user then pulls the first guard plate (3011) and the second guard plate (3012) toward both sides simultaneously. Under the cooperation of the guide rod (204) and the guide groove (305) and the guiding action of the guide block (309), the right connecting piece (302) provided at the end of the second guard plate (3012) is engaged with the left connecting piece (303) provided at the end of the first guard plate (3011), and the through holes provided on the right connecting piece (302) and the left connecting piece (303) are aligned with the limiting groove (202) provided through the column (201). The user can connect the first guard plate (3011) and the second guard plate (3012) by passing a plurality of second bolts through the through holes provided on the right connecting piece (302) and the left connecting piece (303). Thus, the first guard plate (3011) and the second guard plate (3012) can be installed on both sides of the column (201) respectively. Step 5: After the installation of the plurality of first support plate bodies (301) is completed, the first reinforcement assembly (4) can be installed on the outside of the plurality of first support plate bodies (301), wherein the crossbeam (401) can reinforce the upper and lower halves of the first support plate bodies (301), and then four diagonal bracing rods (501) can be used to support four positions on the crossbeam (401), and the four diagonal bracing rods (501) are combined to form a quadrangular pyramid structure, and the ends of the four diagonal bracing rods (501) are connected to the support seat (506), and the support seat (506) is fixed to the bottom of the foundation pit through the embedded parts (507), thereby strengthening the support effect of the plurality of first support plate bodies (301) by diagonal bracing; Step 6: For the area where the inner wall of the foundation pit is curved, multiple second supporting plate bodies (601) are connected to support it, wherein two second supporting plate bodies (601) are assembled and spliced through the first page plate (602) and the second page plate (603) to fit the curved inner wall inside the foundation pit. The fixing rod (801) and the adjusting rod (802) provided between the two second supporting plate bodies (601) can be combined with the fixing rod (801) and the adjusting rod (802) of different lengths according to the actual size of the second supporting plate body (601). The outer walls of the fixing rod (801) and the adjusting rod (802) can be connected with reinforcing rods (803) of different lengths to strengthen the second supporting plate. The inner wall of the plate body (601) is supported, and the fixing rod (801) and the adjusting rod (802) are both provided with mounting holes that match the first bolt (505) on the docking seat (504). Then, the supporting assembly (5) can also cooperate with the second reinforcing assembly (8) for support, further ensuring the supporting effect of the second protective assembly (6) on the curved position of the inner wall of the large foundation pit. Both ends of the second protective assembly (6) are rotatably connected to the connecting plate (9) through the first page plate (602) and the second page plate (603). The ends of the connecting plate (9) are matched and connected with the right connecting piece (302) and the right connecting piece (302) provided at both ends of the first supporting plate body (301); Step 7: By combining multiple sets of first protection components (3) and multiple sets of second protection components (6), the inner wall of a large foundation pit of various shapes can be supported.

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